Concepts

Concept definitions. File format: tab-delimited table; newline terminated. Columns: concept id - Unique numeric code identifying each concept. This is the key concept id referenced in the other files; concept name - The descriptive name of each concept; domain - The OMOP domain of each concept; vocabulary id - The source vocabulary which originally defined the concept (e.g., SNOMED-CT, RxNorm, etc); concept class id - The OMOP concept class; concept code - The identifier from the source vocabulary for this concept.